static void
dissect_dmx_chan(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
col_set_str(pinfo->cinfo, COL_PROTOCOL, "DMX Channels");
col_clear(pinfo->cinfo, COL_INFO);
if (tree != NULL) {
static const char *chan_format[] = {
"%2u%% ",
"0x%02x ",
"%3u "
};
static const char *string_format[] = {
"0x%03x: %s",
"%3u: %s"
};
emem_strbuf_t *chan_str = ep_strbuf_new_label("");
proto_item *item;
guint16 length,r,c,row_count;
guint8 v;
unsigned offset = 0;
proto_tree *ti = proto_tree_add_item(tree, proto_dmx_chan, tvb, offset, -1, ENC_NA);
proto_tree *dmx_chan_tree = proto_item_add_subtree(ti, ett_dmx_chan);
length = tvb_reported_length_remaining(tvb, offset);
row_count = (length / global_disp_col_count) + ((length % global_disp_col_count) == 0 ? 0 : 1);
for (r = 0; r < row_count;r++) {
for (c = 0;(c < global_disp_col_count) && (((r * global_disp_col_count) + c) < length);c++) {
if ((global_disp_col_count >= 2) && ((c % (global_disp_col_count / 2)) == 0)) {
ep_strbuf_append(chan_str, " ");
}
v = tvb_get_guint8(tvb, (offset + (r * global_disp_col_count) + c));
if (global_disp_chan_val_type == 0) {
v = (v * 100) / 255;
if (v == 100) {
ep_strbuf_append(chan_str, "FL ");
} else {
ep_strbuf_append_printf(chan_str, chan_format[global_disp_chan_val_type], v);
}
} else {
ep_strbuf_append_printf(chan_str, chan_format[global_disp_chan_val_type], v);
}
}
proto_tree_add_none_format(dmx_chan_tree, hf_dmx_chan_output_dmx_data, tvb,
offset+(r * global_disp_col_count), c,
string_format[global_disp_chan_nr_type],
(r * global_disp_col_count) + 1, chan_str->str);
}
/* Add the real type hidden */
item = proto_tree_add_item(dmx_chan_tree, hf_dmx_chan_output_data_filter, tvb,
offset, length, ENC_NA );
PROTO_ITEM_SET_HIDDEN(item);
}
}
static int
dissect_reason(tvbuff_t *tvb, int offset, proto_tree *tree)
{
if (tree)
{
guint32 reason =
tvb_get_ntohl(tvb, offset);
proto_item *reason_item =
proto_tree_add_item(tree, hf_vxi11_core_reason, tvb, offset, 4, FALSE);
if (reason_item)
{
proto_tree *reason_tree =
proto_item_add_subtree(reason_item, ett_vxi11_core_reason);
proto_tree_add_item(reason_tree, hf_vxi11_core_reason_req_cnt, tvb, offset, 4, FALSE);
proto_tree_add_item(reason_tree, hf_vxi11_core_reason_chr, tvb, offset, 4, FALSE);
proto_tree_add_item(reason_tree, hf_vxi11_core_reason_end, tvb, offset, 4, FALSE);
if (reason != 0)
{
emem_strbuf_t *strbuf = ep_strbuf_new_label(NULL);
if (reason & VXI11_CORE_REASON_REQCNT)
{
ep_strbuf_append(strbuf, "REQ_CNT, ");
}
if (reason & VXI11_CORE_REASON_CHR)
{
ep_strbuf_append(strbuf, "CHR, ");
}
if (reason & VXI11_CORE_REASON_END)
{
ep_strbuf_append(strbuf, "END, ");
}
ep_strbuf_truncate(strbuf, strbuf->len - 2);
proto_item_append_text(reason_item, " (%s)", strbuf->str);
}
}
}
return offset + 4;
}
static int
dissect_flags(tvbuff_t *tvb, int offset, proto_tree *tree)
{
if (tree)
{
guint32 flags =
tvb_get_ntohl(tvb, offset);
proto_item *flags_item =
proto_tree_add_item(tree, hf_vxi11_core_flags, tvb, offset, 4, FALSE);
if (flags_item)
{
proto_tree *flags_tree =
proto_item_add_subtree(flags_item, ett_vxi11_core_flags);
proto_tree_add_item(flags_tree, hf_vxi11_core_flag_wait_lock, tvb, offset, 4, FALSE);
proto_tree_add_item(flags_tree, hf_vxi11_core_flag_end, tvb, offset, 4, FALSE);
proto_tree_add_item(flags_tree, hf_vxi11_core_flag_term_chr_set, tvb, offset, 4, FALSE);
if (flags != 0)
{
emem_strbuf_t *strbuf = ep_strbuf_new_label(NULL);
if (flags & VXI11_CORE_FLAG_WAITLOCK)
{
ep_strbuf_append(strbuf, "WAIT_LOCK, ");
}
if (flags & VXI11_CORE_FLAG_END)
{
ep_strbuf_append(strbuf, "END, ");
}
if (flags & VXI11_CORE_FLAG_TERMCHRSET)
{
ep_strbuf_append(strbuf, "TERM_CHR_SET, ");
}
ep_strbuf_truncate(strbuf, strbuf->len - 2);
proto_item_append_text(flags_item, " (%s)", strbuf->str);
}
}
}
return offset + 4;
}